<template>
  <div>
    <!--    面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
<!--    卡片视图-->
    <el-card>
<!--      添加角色按钮区域-->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible">添加角色</el-button>
        </el-col>
      </el-row>
<!--      角色列表区域-->
      <el-table :data="rolelist" border stripe>
<!--        展开列-->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',i1 === 0 ? 'bdtop' : '','vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
<!--              渲染一级权限-->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
<!--              渲染二级和三级权限-->
              <el-col :span="19">
<!--                通过 for 循环渲染二级权限-->
                <el-row :class="[i2 === 0 ? '' : 'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
<!--                  二级权限-->
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
<!--                 三级权限 -->
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3, i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
<!--            <pre>-->
<!--              {{scope.row}}-->
<!--            </pre>-->
          </template>
        </el-table-column>
<!--        索引列-->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteRoleById(scope.row.id)">删除</el-button>
            <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限 </el-button>
          </template>
        </el-table-column>
      </el-table>

    </el-card>
<!--    分配权限对话框-->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightsDialogVisible"
      width="50%" @close="setRightDialogClosed">
<!--      树形控件-->
      <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightsDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
<!--    添加角色对话框-->
    <el-dialog
      title="添加角色"
      :visible.sync="setAddRoleDialogVisible"
      width="50%">
      <el-form :model="addForm" ref="addFormRef" label-width="80px">
        <el-form-item label="角色名称">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setAddRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
<!--    修改角色对话框-->
    <el-dialog
      title="修改角色"
      :visible.sync="editDialogVisible"
      width="50%">
      <el-form :model="editForm" ref="addFormRef" label-width="80px">
        <el-form-item label="角色名称">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRole">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Roles",
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      // 控制分配权限对话框是否显示
      setRightsDialogVisible: false,
      // 所有权限的数据
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 这是默认选中的节点Id值数组
      defKeys: [],
      // 当前即将分配权限的角色id
      roleId: '',
      // 控制添加角色对话框是否显示
      setAddRoleDialogVisible: false,
      // 添加角色的表单数据
      addForm: {
        roleName:'',
        roleDesc: ''
      },
      // 控制修改角色对话框是否显示
      editDialogVisible: false,
      // 修改角色的表单数据
      editForm: {}
    }
  },
  created() {
    this.getRoleList()
  },
  methods: {
    // 获取全部的角色列表
    async getRoleList(){
      const {data: res} = await this.$http.get("/roles")
      if (res.meta.status !== 200){
        return this.$message.error("获取角色列表失败！")

      }
      this.rolelist = res.data
      console.log(this.rolelist)
    },
    // 根据id删除对应的权限
    async removeRightById(role, rightId){
      // 弹框提示隐用户是否要删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm'){
        return this.$message.info("取消了删除！")

      }
      // console.log("确认了删除！")
      const {data: res} = await this.$http.delete("/roles/" + role.id + "/rights/" + rightId)
      if(res.meta.status !== 200){
        return this.$message.error("删除权限错误！")
      }
      // 刷新角色列表
      // await this.getRoleList()
      role.children = res.data
      this.$message.success("删除权限成功！")
    },
    // 展示分配权限对话框
     async showSetRightDialog(role){
      this.roleId = role.id
      const {data: res} = await this.$http.get("/rights/tree")

       if (res.meta.status !== 200){
         return this.$message.error("获取权限信息失败！")
       }
       // 获取到的权限数据保存到data中
       this.rightslist = res.data
       // 递归获取已经三级节点的Id
       this.getLeafKeys(role, this.defKeys)
       this.setRightsDialogVisible = true
    },
    //通过递归的形式，获取角色下所有三级权限的id，并保存到defKeys数组中
    getLeafKeys(node, arr){
      // 如果当前弄得节点不包含children属性，则是三级节点
      if (!node.children){
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))

    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed(){
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights(){
      const keys = [...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()]
      // console.log(keys)
      const idStr = keys.join(",")
      const {data: res} = await this.$http.post("/roles/"+this.roleId+"/rights", {rids: idStr})
      if (res.meta.status !== 200){
        return this.$message.error("分配权限失败！")
      }
      this.$message.success("分配权限成功！")
      await this.getRoleList()
      this.setRightsDialogVisible = false
    },
    // 控制添加角色对话框弹出
    addDialogVisible(){
      this.setAddRoleDialogVisible = true
    },
    // 点击按钮，完成添加角色
    async addRole(){
      const {data: res} = await this.$http.post("/roles", this.addForm)
      if (res.meta.status !== 201){
        return this.$message.error("添加角色失败！")
      }
      this.$message.success("添加角色成功！")
      await this.getRoleList()
      this.setAddRoleDialogVisible = false
      this.addForm = {}
    },
    // 控制修改角色对话框是否显示
    async showEditDialog(id){
      const {data: res} = await this.$http.get("/roles/" + id)
      if (res.meta.status !==200){
        return this.$message.error("获取角色信息失败！")
      }
      this.editForm = res.data
      // console.log("id:"+this.editForm.roleId)
      this.editDialogVisible = true
    },
    // 点击确定按钮，完成修改
    async editRole(){
      const {data: res} = await this.$http.put("/roles/" + this.editForm.roleId, {roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc})
      if (res.meta.status !== 200){
        return this.$message.error("更新角色信息失败！")
      }
      this.editDialogVisible = false
      this.$message.success("更新角色信息成功！")
      await this.getRoleList()
    },
    // 根据id删除角色
    async deleteRoleById(id){
      const {data: res} = await this.$http.delete("/roles/" + id)
      if (res.meta.status !== 200){
        return this.$message.error("删除角色失败！")
      }
      this.$message.success("删除角色成功！")
      await this.getRoleList()
    }
  },
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
 }
.vcenter {
  display: flex;
  align-items: center;
}
</style>
